EP 2574720 B1 20150225 - A downhole injection tool
Title (en)
A downhole injection tool
Title (de)
Bohrloch- Injektionswerkzeug
Title (fr)
Outil d'injection de fond de puits
Publication
Application
Priority
EP 11183496 A 20110930
Abstract (en)
[origin: EP2574720A1] The present invention relates to downhole injection tool (1) for injecting an injection fluid into an annular space (5a) surrounding the downhole injection tool and enclosed by an inside wall (3a) of a borehole or a well tubular structure (3). The downhole injection tool comprises an injection unit (1a) comprising a first expandable cup (118a) adapted to provide a first seal (119a) against the inside wall, a second expandable cup (118b) adapted to provide a second seal (119b) against the inside wall, the two cups, in an expanded state, together defining an isolated zone (5b) of the annular space, at least one pipe element (111) extending in a longitudinal direction (13) between the two cups, the pipe element providing a fluid passage (108) between an inlet (104) arranged in one end of the pipe element and an outlet (125) arranged in the pipe element in between the cups, the second expandable cup being slidably connected with the pipe element and displaced in the longitudinal direction away from the first expandable cup under the influence of the injection fluid injected into the isolated zone, whereby a distance d between the two cups is increased, wherein the injection unit further comprises a retainer sleeve (112) being slidably arranged around the expandable cups to prevent unintentional expansion of the expandable cups during insertion of the downhole injection tool, the retainer sleeve is slidable in the longitudinal direction, and the expandable cups are released by movement of the retainer sleeve in the longitudinal direction. Furthermore, the present invention relates to a downhole system comprising the downhole injection tool as well as to a method for casting a cement plug downhole.
IPC 8 full level
E21B 33/124 (2006.01); E21B 33/126 (2006.01); E21B 33/134 (2006.01); E21B 43/25 (2006.01)
CPC (source: EP US)
E21B 33/124 (2013.01 - EP US); E21B 33/126 (2013.01 - EP US); E21B 33/13 (2013.01 - US); E21B 33/134 (2013.01 - EP US); E21B 43/25 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2574720 A1 20130403; EP 2574720 B1 20150225; AU 2012314453 A1 20140501; AU 2012314453 B2 20150917; BR 112014006226 A2 20170411; CA 2848821 A1 20130404; CA 2848821 C 20191029; CN 103814189 A 20140521; CN 103814189 B 20170322; DK 2574720 T3 20150601; IN 686CHN2014 A 20150821; MX 2014003022 A 20140530; MX 340852 B 20160728; MY 167128 A 20180813; RU 2014114426 A 20151110; RU 2596811 C2 20160910; US 2014238675 A1 20140828; US 9683425 B2 20170620; WO 2013045553 A2 20130404; WO 2013045553 A3 20130815
DOCDB simple family (application)
EP 11183496 A 20110930; AU 2012314453 A 20120927; BR 112014006226 A 20120927; CA 2848821 A 20120927; CN 201280044821 A 20120927; DK 11183496 T 20110930; EP 2012069088 W 20120927; IN 686CHN2014 A 20140128; MX 2014003022 A 20120927; MY PI2014000729 A 20120927; RU 2014114426 A 20120927; US 201214348751 A 20120927